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Finding the Fourth Proportional to 14,967.77, 20,655.68 and 8,253.63

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Solution

The fourth proportional to 14,967.77, 20,655.68 and 8,253.63 is: 11,390.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,967.77 : 20,655.68 = 8,253.63 : x
  2. Step 2: Convert to fraction form
    14,967.77/20,655.68 = 8,253.63/x
  3. Step 3: Cross multiply
    14,967.77x = 20,655.68 × 8,253.63
  4. Step 4: Simplify right side
    14,967.77x = 170,484,298.85
  5. Step 5: Solve for x
    x = 170,484,298.85/14,967.77
  6. Step 6: Final answer
    x = 11,390.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.